Function to calculate Standard Deviation

[RPC]

Hi
Is there a function to calculate Standard Deviation in HMG ?
On Esgici's wonderful site Vivaclipper.com I found ASTDDEV() function but HMG throws error of undefined function.
Can anyone help me on this.
Thanks

[mol]

Find information in which library this function and include it manually.
This function is defined in SuperLib:
https://vivaclipper.wordpress.com/2013/ ... -superlib/

[Claudio Ricardo]

Hola...
Tal vez este post te ayude:
viewtopic.php?t=5392

Hi...
Maybe this post can help you:
viewtopic.php?t=5392

[RPC]

Hi Mol and Claudio
Thanks for your reply.
I have SuperLib sup3552.lib. I tried linking it by putting libs=sup3552.lib in configuration tab of IDE but it doen't work.
I checked the link provided by Claudio where Esgici has advised to read readme.txt file in harbour directory.
The readme.txt file contains

4.) Apply supplied patch to the source using GNU Patch:
patch -lNi superlib.dif

from where do I get patch.exe to patch superlib.dif. Will this produce something like superlib.a library which can be linked to my program using libs=superlib.a
Pls advice.
Many thanks to both of you.

[danielmaximiliano]

Miren aqui
http://www.pctoledo.com.br/forum/viewto ... =4&t=15810

[RPC]

Hi Daniel
Many thanks for the link. I have downloaded the files mentioned by Vlademiro in the link.
However I still can't link superlib.lib. Can you provide a more detailed guide.
Thanks

[Claudio Ricardo]

This is the function and asociated function:

FUNCTION amStdDev(aArray,nElem,bCondition)
return(sqrt(amVariance(aArray,nElem,bCondition)))

FUNCTION amVariance(aArray,nElem,bCondition)
local nAverage, i
local nVariance := 0
local nCount := 0
local nReturn := 0
if (valtype(nElem) == 'N')
nAverage := amAverage(aArray,nElem,bCondition)
bCondition := iif(valtype(bCondition) == 'B',bCondition,{||.t.})
for i := 1 to len(aArray)
if (eval(bCondition,aArray))
nVariance += ((nAverage-aArray[nElem] )^2)
nCount++
endif
next
nReturn := (nVariance/nCount)
endif
return (nReturn)

Copy and paste in you .prg or create new module into you project and paste into... is all.
Pd Sorry for my bad eng

[Claudio Ricardo]

Call :
amStdDev (aArray,nElem,bCondition)
or can rename " FUNCTION amStdDev (aArray,nElem,bCondition) " to " FUNCTION ASTDDEV (aArray,nElem,bCondition) "
if your .prg call this function with this name.

[RPC]

Hi Claudio
Thanks for the functions.
It requires amAverage(aArray,nElem,bCondition) function while compiling.
Also what is nElem value to be passed ?

[danielmaximiliano]

Hi Claudio
Thanks for the functions.
It requires amAverage(aArray,nElem,bCondition) function while compiling.
Also what is nElem value to be passed ?

Se supone que para sacar un promedio necesitamos los valores (aArray) y sobre cuantos elementos (nElements)